you mean less active/too defensive?? I think Vanes with Boo Boo... vanes threw so little punches...i can see boo boo cracking down a bit when vanes pressured but he stopped and waited for counter punches..i think vanes threw that one away by not letting go.
andre dirrell p4p the most scared fighter in boxing, he fakes a neurological injury and bitches out of the super 6 tournament, even in the build up to the abraham fight you could see how scared he was when him and his team were watching the abraham fight.
As far as elite fighters go...Wlad. He will hug a man to death before trading punches and if he can't do that he'll flat out retreat. For someone with so many physical gifts and skills this should drive every boxing fan crazy.